Ventilating device



May 28, 1940.

w. H. DREssER ET A;

VENTILATING DEVICE Filed March 5, 1939 i W E n e u Bam.. .|V.. w II HI 3% m wmy 0/ 4 1I OS E 55mm O wn@ n EN m5. wi

Patented May 28, 1940 PATENT OFFICE VENTILATING DEVICE Walter H. Dresser and Wilbur E. Van Deren, San Francisco, Calif.; said Dresser assigner to said Van Doren Application March 3, 1939, Serial No. 259,666

3 Claims.

This invention relates to improvements in Ventilating devices and has particular reference to a window ventilator wherein fresh air may be admitted into a room without causing a draft and, at the same time, will serve to absorb sound Waves or noises which usually enter opened windows.

A further object is to provide in the ventilator means for dissipating or condensing fog and means to allow foul air to pass from the room.

An additional object is to produce a ventilator that is economical to manufacture, highly efficient in use, most durable, and a ventilator which may be installed in the ordinary window without altering the window construction.

A further object is to produce a device of this character which will not shut off any appreciable amount of light, which may enter the window.

Other objects and advantages will be apparent during the course of the following description.

In the accompanying drawing forming a part of this specification and in which like numerals are employed to designate like parts throughout the same,

Fig. l is a cross sectional View of our ventilator taken on the line 2-2 of Fig. 2;

Fig. 2 is a top plan view of Fig. 1;

Fig. 3 is an enlarged fragmentary View, showing the manner in which the ventilator plates are held; and

Fig. 4 is a fragmentary cross sectional view taken on the line 4-4 of Fig. 1, showing the employment of sound deadening material.

In Ventilating a room, it is necessary to admit fresh air, which should be done without causing drafts, and, at the same time, eliminating unnecessary noises which enter opened windows.

Applicants have, therefore, devised a ventilator which may be placed between the top of the upper sash and the top of the window, which will admit air without causing excessive drafts, and also a device which will reflect and will absorb unnecessary noises.

In the accompanying drawing wherein for the purpose of illustration is shown a preferred embodiment of our invention, the numeral 5 designates a window frame having the upper sash 6 lowered and having our device installed between the top of the upper sash and the top of the window. Our device consists of a substantially rectangular frame 'l of suicient cross sectional area to fill the open space of the window and provided with open sides 1 and 8. This frame has bottom baffles 8 and 9 made of a sound deadening material and so disposed that their angular relation reects the sound downwardly and away from the window. Within the casing 1 are arranged a series of vertically disposed spaced plates Il of equal length between the ends and overlapping each other a greater portion of their width. The outer plate engages the top of the casing and the inner plate engages the bottom of the casing, whereby all the air entering the casing is diverted upwardly in separate streams between the plates. 'Ihese plates also serve to gather fog thereon for the purpose of condensing the same.

The cover of our rectangular structure is provided with a glass roof l2, and, consequently, light from the sky or from the outside may enter 15 through the roof l2 or the plates Il.

Broadly stated, it will thus be seen that with our device in place, air and light may enter the room, but the storm elements as well as the noises will be eliminated.

. To be more specific the sound absorbing material baffles 8 and 9 will readily absorb the major sound waves from the currents of air as the air current passes over the surfaces of the bales. Furthermore, as a result of the employment of the plates il the air current will be divided into small units that will pass along the surface of the plates Il so that there is thus realized a smoothing out of the sound waves that may be carried in the air current, a condensing of exces- 30 sive moisture (fog) that may be present in the air current, a breaking down of the velocity of the air current, and a barrier to prevent rain from passing through the window opening.

It is to be understood that the form of our invention herewith shown and described is to be taken as a preferred example of the same and that various changes relative to the material, size, shape and arrangement of parts may be resorted to without departing from the spirit of the invention or the scope of the subjoined claims.

Having thus described our invention, we claim:

l. In a device of the character described, comprising a substantially rectangular casing having open sides, and a series of vertically disposed stepped spaced plates of equal length arranged between the ends of the casing and overlapping each other a greater portion of their width, the outer plate engaging the top of the casing and `the inner plate engaging the bottom of the casing, whereby all of the air entering the casing is diverted upwardly in separate streams between the plates.

2. 1n a device of the character described, comprising a substantially rectangular casing having open sides, the top of the casing formed of transparent material, and a series of vertically disposed stepped spaced transparent plates of equal length arranged between the ends of the casing and overlapping each other a greater portion of their Width, the outer plate engaging the top of the casing and the inner plate engaging the bottom of the casing, whereby all the air entering the casing is diverted upwardly in separate streams between the plates.

3. In a device of the character described, comprising a substantially rectangular casing having open sides, the top of the casing formed of transparent material, the bottom of the casing formed of sound deadening material arranged at an angle, and a series of vertically disposed stepped spaced transparent plates of equal length a1'- ranged between the ends of the casing and overlapping each other a greater portion of their width, the outer plate engaging the top of the casing and the inner plate engaging the bottom of the casing, whereby all the air entering the casing is diverted upwardly in separate streams 10 between the plates.

WALTER H. DRESSER. WILBUR E. VAN DOREN. 

